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A 16-year-old male with no significant past medical history presents to the emergency room with vision complaints and coordination issues. Four days ago, he began experiencing double vision and since then has had progressive difficulty picking up objects and buttoning his shirts. On physical exam, the patient has a decreased range of motion of the extraocular muscles bilaterally, as well as areflexia and ataxia when walking. What is the most likely diagnosis?
Based on the findings on the muscle biopsy (trichrome stain) shown below, which of the following is most likely seen on examination of this patient?
Which of the following is true regarding IVIG and PLEX therapy?
A 67-year-old male wakes up with a painful, right-sided, itchy rash coming across his abdomen like a band involving the umbilicus. His primary care provider is concerned that the patient has shingles. For this patient, re-activation of the varicella-zoster virus occurred at the dorsal root ganglion at which thoracic level?
A 57-year-old male undergoes a cervical decompression laminoplasty for myelopathy, and on postoperative day #2, he complains of severe left shoulder pain. On examination, he has weakness with abduction of the left arm at the shoulder and flexion of the left arm at the elbow. This patient’s lesion localizes to which nerve root?
A thin 28-year-old male presents to the clinic with complaints of foot drop. On exam, he has a right foot drop as well as numbness on the lateral aspect of the right lower leg. You suspect compression of a nerve at the fibular head. Malfunction of which of the following nerves causes the foot drop itself?
Which of the following nerves is a terminal branch of the posterior cord?
The paraspinal muscles are innervated by which of the following?
What is the mechanism of action of pregabalin?
A 45-year-old man with a past medical history of cardiac arrhythmia requiring pacemaker placement is referred to the clinic with a twenty-five-year history of slowly-progressive bilateral ptosis and diplopia. On examination, he has bilateral ptosis, decreased range of motion of the extraocular muscles, and mild proximal weakness in his upper and lower extremities. Which of the following is the most likely diagnosis?
A 58-year-old male with a prolonged history of myasthenia gravis was recently discharged 4 months ago from the hospital with his second myasthenic crisis requiring transient intubation. Since that hospitalization, he was on prednisone, tapered down to 40 mg a day, cyclosporine and pyridostigmine. He comes to the ED today after having a generalized tonic-clonic seizure. On arrival to the ED, the patient is post-ictal and has vision deficits on exam. MRI of the brain shows T2 hyperintensities on the posterior cerebral hemispheres. Which of the following is the likely etiology of this clinical presentation?
This pathology slide is most consistent with which of the following diseases?
Which of the following is the antibody associated with dermatomyositis that is known to confer the highest risk of cancer?